{"id":"CVE-2013-1661","aliases":["EUVD-2013-1690","GHSA-x84p-w2wx-9hf2"],"status":"published","title":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File...","description":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File Copy (NFC) protocol, which allows man-in-the-middle attackers to cause a denial of service (unhandled exception and application crash) by modifying the client-server data stream.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01105,"percentile":0.6602,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-09-04T01:00:00Z","modified":"2026-06-16T23:51:51Z","products":[{"vendor":"vmware","product":"esx"},{"vendor":"vmware","product":"esxi"}],"references":[{"url":"http://www.vmware.com/security/advisories/VMSA-2013-0011.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-1661"},{"url":"https://github.com/advisories/GHSA-x84p-w2wx-9hf2"}],"sources":{"cve":[{"id":"CVE-2013-1661","description":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File Copy (NFC) protocol, which allows man-in-the-middle attackers to cause a denial of service (unhandled exception and application crash) by modifying the client-server data stream.","status":"published","published":"2013-09-04T01:00:00Z","modified":"2024-09-16T17:08:49.716Z","updated_at":"2026-11-02T14:34:58.534075Z"}],"euvd":[{"id":"EUVD-2013-1690","description":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File Copy (NFC) protocol, which allows man-in-the-middle attackers to cause a denial of service (unhandled exception and application crash) by modifying the client-server data stream.","status":"published","published":"2013-09-04T01:00:00Z","modified":"2024-09-16T17:08:49Z","updated_at":"2026-11-03T00:55:44.825687Z"}],"ghsa":[{"id":"GHSA-x84p-w2wx-9hf2","title":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File...","description":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File Copy (NFC) protocol, which allows man-in-the-middle attackers to cause a denial of service (unhandled exception and application crash) by modifying the client-server data stream.","status":"published","published":"2022-05-17T05:04:00Z","modified":"2023-01-28T05:03:18Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:57.015581Z"}],"nvd":[{"id":"CVE-2013-1661","description":"VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File Copy (NFC) protocol, which allows man-in-the-middle attackers to cause a denial of service (unhandled exception and application crash) by modifying the client-server data stream.","status":"published","published":"2013-09-04T03:24:36.967Z","modified":"2026-06-16T23:51:51.527Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:35.248411Z"}]}}